MAX6346XR43+

Overview

The MAX6346XR43+ is a microprocessor supervisory circuit from Analog Devices Inc./Maxim Integrated, designed to monitor a single voltage input. It features an active-low, push-pull output and operates within a supply voltage range up to 5.5 V. The device has a threshold voltage of 4.3 V and an overvoltage threshold of approximately 4.515 V. It exhibits a reset delay time of 185 ms and maintains an accuracy of 1.5%. The component functions with a typical operating supply current of 500 nA and dissipates up to 320 mW. It is available in SC-70 (SOT-323) packaging and supports surface mount installation across a temperature range of -40°C to +85°C.

Feature Summary

• Monitors VCC supply voltage for power integrity
• Provides active-low push-pull reset signal
• Ultra-low-power consumption design

Applications

• Battery voltage monitoring systems
• Embedded wireless networking projects
• Microprocessor power-on reset circuits

Procurement Notes

Verify the specific suffix 'R43' to confirm the 4.3 V threshold voltage, as the MAX6346 series includes multiple variants with different thresholds. Ensure the package type matches the required SC-70 footprint. Confirm RoHS compliance status through official manufacturer documentation before integration into regulated assemblies.

Selection Notes

Select this component when a single-channel voltage supervisor with low quiescent current is required. The 4.3 V threshold suits applications monitoring 5 V or similar rails. Consider the SC-70 package size for space-constrained designs. Verify that the 185 ms reset delay meets system timing requirements without external components.

Part Context

This part belongs to the MAX6346 family of ultra-low-power reset circuits. These devices are engineered for portable and battery-operated electronics where power efficiency is critical. The family offers various threshold options to accommodate different supply rail voltages while maintaining consistent performance characteristics across the series.

Replacement Considerations

Check for other MAX6346 variants with different threshold suffixes if the 4.3 V level is unsuitable. Verify pinout compatibility with alternative supervisors from the same manufacturer or competitors offering similar SC-70 packaged solutions.